Resection of adjacent viscera for complex retroperitoneal tumor        WANG Ya-nong. Department of Gastric and Soft Tissue Surgery, Fudan University Shanghai Cancer Center; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
Abstract    Retroperitoneal tumors, especially highly malignant retroperitoneal soft tissue sarcomas and recurrent tumors, often involve adjacent viscera by infiltrative pattern or by expansive pattern. Extended surgery with resection of adjacent viscera is recommended to control local recurrence and improve survival. Resectability should be carefully evaluated preoperatively by computed tomography scan and at surgical exploration. The frontline aggressive surgical approach and the way of en bloc resection have many advantages such as clear anatomic approach, high success rate of R0 resection, less concomitant damage of organ, and less bleeding in the operation.